Washington, March 5, 2026 — In the first major congressional vote on America’s escalating military campaign against Iran, the Republican-led Senate on Wednesday rejected a bipartisan resolution that would have forced President Donald Trump to halt U.S. hostilities unless Congress explicitly authorized them.
The measure failed on a 47-53 vote, falling almost entirely along party lines. All but one Republican opposed the resolution, while all but one Democrat supported it. The sole Republican “yes” vote came from Sen. Rand Paul of Kentucky, a longtime critic of expansive presidential war powers. Democratic Sen. John Fetterman of Pennsylvania broke ranks to vote “no.”
The resolution, co-sponsored by Sen. Tim Kaine (D-Va.) and Sen. Rand Paul (R-Ky.), invoked the 1973 War Powers Resolution. It directed the president to terminate the use of U.S. armed forces against Iran within 30 days unless Congress passed a new Authorization for Use of Military Force (AUMF). Proponents argued it would reassert Congress’s constitutional authority over war and prevent another open-ended Middle East conflict.
Senate Democratic Leader Chuck Schumer urged colleagues: “Today every senator — every single one — will pick a side. Do you stand with the American people who are exhausted with forever wars in the Middle East or stand with Donald Trump and Pete Hegseth as they bumble us headfirst into another war?”
Republicans countered that the strikes were necessary and limited, accusing Democrats of undermining national security. Sen. John Barrasso (R-Wyo.) said, “Democrats would rather obstruct Donald Trump than obliterate Iran’s nuclear program.” Sen. Susan Collins (R-Maine), who voted against the measure, stressed the need to support troops: “Passing this resolution now would send the wrong message to Iran and to our service members.”
Background: Surprise Strikes and Rapid Escalation
The vote came days after U.S. and Israeli forces launched a surprise wave of strikes on Iranian targets on Saturday. The operation — described by the administration as targeting nuclear facilities, missile sites, and naval assets — has already drawn Iranian retaliation, including a drone strike in Kuwait that killed six U.S. service members over the weekend.
President Trump has described the campaign as essential to neutralize Iran’s nuclear threat and support Israel. Administration officials, including Defense Secretary Pete Hegseth and Joint Chiefs Chairman Gen. Dan Caine, briefed senators Tuesday, warning that the conflict could last up to eight weeks and that Iran retains the ability to launch missiles. Trump has not ruled out ground troops.
Democrats and a handful of Republicans have criticized the president for launching major combat operations without prior congressional approval, echoing past disputes over Trump’s 2025 strikes on Iranian nuclear sites and other unilateral actions.
Symbolic but Significant Vote
Even if the resolution had passed both chambers, it would have faced an almost certain presidential veto — and Congress lacks the two-thirds majority needed to override it. Still, the vote serves as an early referendum on Trump’s handling of the crisis and puts every senator on record weeks before midterm elections.
A similar resolution in the House is scheduled for Thursday, where it is also expected to fail. Republicans there plan to advance a separate measure affirming Iran as the world’s leading state sponsor of terrorism.
With U.S. forces now engaged and casualties mounting, lawmakers from both parties expressed concern about the lack of a clear exit strategy. Sen. Chris Coons (D-Del.) warned of “opening a door into chaos in the Middle East when we cannot see the other side of it.”
The Senate’s rejection hands President Trump broad leeway to continue the campaign for now, while highlighting deep partisan divisions over who controls America’s decisions to go to war.
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